Thanks for the cards! I like the ideas but I'd rather not use players from the game (though a few did make me chuckle) and rather focus on the lore of Classic. However, I definitely think we could just rename them and keep their abilities.
EDIT: Also, I don't necessarily want this to be a version of Hearthstone per say. The abilities in Hearthstone are nice but maybe the abilities should be given different names (such as 'Charge' and 'Battlecry', although I'm not a huge fan of the way Charge and resting cards mechanics work).